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LON - STL

Find cheap flights from London to St. Louis from £234

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to St. Louis departing on 4/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 5/6
Wed 12/6

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to St. Louis.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to St. Louis.
In the last 7 days, travellers have searched 42,830,901 times on KAYAK, and here's why:

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Cheap flight deals from London to St. Louis (LON-STL)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
11:15 - 23:17LHR-STL
18h 02m1 stop
10:46 - 07:30STL-LHR
14h 44m1 stop
£527Finnair
Find Deal
Wed, 15 May - Thu, 30 May
14:00 - 07:22LGW-STL
23h 22m1 stop
19:44 - 10:00STL-LGW
32h 16m1 stop
Tue, 4 Jun - Tue, 11 Jun
06:50 - 15:46LHR-STL
14h 56m2 stops
06:08 - 06:30STL-LHR
18h 22m2 stops
£743United Airlines
Find Deal
Wed, 15 May - Thu, 30 May
08:30 - 19:54LHR-STL
17h 24m1 stop
08:05 - 05:55STL-LHR
15h 50m1 stop
£751United Airlines
Find Deal
Wed, 15 May - Thu, 30 May
10:05 - 17:19LHR-STL
13h 14m1 stop
16:18 - 10:20STL-LHR
12h 02m1 stop
£766British Airways
Find Deal
Mon, 8 Jul - Mon, 7 Oct
09:20 - 21:36LHR-STL
18h 16m1 stop
14:05 - 08:55STL-LHR
12h 50m2 stops
£767Virgin Atlantic
Find Deal
Mon, 8 Jul - Mon, 7 Oct
11:35 - 23:39LHR-STL
18h 04m1 stop
10:00 - 06:45STL-LHR
14h 45m2 stops
£779Virgin Atlantic
Find Deal
Thu, 5 Sep - Thu, 26 Sep
09:15 - 22:37LCY-STL
43h 22m2 stops
17:34 - 08:40STL-LCY
33h 06m2 stops
£981Lufthansa
Find Deal
Mon, 8 Jul - Mon, 7 Oct
19:10 - 15:41LCY-STL
26h 31m2 stops
17:31 - 08:40STL-LCY
33h 09m2 stops
£1,081Lufthansa
Find Deal
Fri, 24 May - Tue, 4 Jun
07:55 - 20:55LGW-STL
19h 00m2 stops
09:44 - 11:15STL-LGW
19h 31m2 stops
£1,095British Airways
Find Deal
Mon, 3 Jun - Tue, 11 Jun

Flights from London to St. Louis - Travel Insights & Trends

Get data-powered insights and trends into flights from London to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from London to St. Louis?

The average price of all flights from London to St. Louis clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to St. Louis on a Wednesday and more expensive on a Sunday. On your return trip to London, you should consider flying back on a Sunday, and avoid Thursdays for better deals.

What is the cheapest month to fly from London to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from London to St. Louis is November, where tickets cost £505 on average. On the other hand, the most expensive months are August and July, where the average cost of tickets is £822 and £764 respectively.

How far in advance should I book a flight from London to St. Louis?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from London to St. Louis, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 27 days before departure.

Which airlines provide the cheapest flights from London to St. Louis?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting London to St. Louis were found on Finnair (£527) and Air Canada (£742). WestJet proposed the cheapest one-way flight at £478.

Good to know - Cheap tickets from London to St. Louis

Low season

March

High season

May

Cheapest flight

£234
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly and prices are also 3% lower on average.
Flight from London Gatwick Airport to St. Louis

When to book flights from London to St. Louis

Are your dates flexible? Find out the best times to travel from London to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to St. Louis

  • Are there fast track facilities at London Airports?

    You can speed up your journey through London Airports using the fast track system. At Heathrow Airport (LHR), fast-track passes cost about £12.50, while at Gatwick Airport (LGW), they cost about £5. Both fast-track services help you skip through security, allowing you more time to enjoy the departure lounge.

  • How can I get from St Louis Airport (STL) to the city centre?

    Getting to the city centre from St Louis Airport (STL) is easy, with a few transport options available. The MLR Red Line to Lambert East TRML Metrolink Station is a low-cost choice. The Red Line takes about 29min and has 12 stops. However, if you want to get to the city quicker, you can get a taxi from the front of the terminal, which takes around 19min.

  • Are there hotels at London Airport?

    If your flight is early in the morning, you can ensure you’re not in a rush by getting a hotel the night before. For example, at Heathrow Airport, you can go to the Ibis London Heathrow Airport, whereas at Gatwick Airport, you can go to Hilton London Gatwick Airport. The hotels are only a short walk to the terminal on the morning of your flight.

  • Can I use a currency exchange at St. Louis Airport?

    When you land at St. Louis Airport, you can use the Banking and Foreign Currency Exchange to convert your Pound Sterling to US Dollar. The currency exchange is in Terminal 1 on the lower level close to the Gate C Security checkpoint.

  • What is the cheapest flight from London to St. Louis?

    In the last 3 days, the lowest price for a flight from London to St. Louis was £294 for a one-way ticket and £661 for a return.

  • Which airports will I be using when flying from London to St. Louis?

    There are 5 airports in London (London City, London Gatwick, London Heathrow, London Luton, and London Stansted.) and only 1 airport in St. Louis (Lambert-St Louis). The cheapest flights are generally found on the London Heathrow Airport to Lambert-St Louis flight route.

  • Which aircraft models fly most regularly from London to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London to St. Louis?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between London and St. Louis, with Star Alliance being the most commonly used for this route.

  • What is the most popular stopover when flying to St. Louis from London?

    Chicago is the most popular stopover city among KAYAK users travelling from London to St. Louis.

  • Which is the best airline for flights from London to St. Louis, KLM or Finnair?

    The two airlines most popular with KAYAK users for flights from London to St. Louis are KLM and Finnair. With an average price for the route of £849 and an overall rating of 7.8, KLM is the most popular choice. Finnair is also a great choice for the route, with an average price of £582 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from London to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to St. Louis with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from London to St. Louis

  • If you’re flying from London Airports, you can relax in an airport lounge before taking off. Most flights on this route depart from Heathrow Airport (LHR), and the Club Aspire Lounge in Terminal 5 is a good option for about £40. Those flying from Gatwick Airport (LGW) can enjoy the Plaza Premium Lounge in the North Terminal for around £28. Both lounges offer food, drink and complimentary wi-fi.
  • As several airports operate the route from London Airports to St. Louis, you can pick where you depart from based on convenience. For example, if you’re starting your journey from the southwest or Midlands, Heathrow is a great airport. On the other hand, Gatwick might be the easiest airport to reach if you’re in the south of the UK.
  • Once you’ve touched down at St. Louis Airport (STL), travelling to nearby places is easy. For example, you can drive to Columbia in about 1h 35min, Springfield in around 1h 30min or Chesterfield in approximately 20min.
  • With London's excellent transport system, you will find it easy to travel to any of London Airports for your flight. If your flight departs from Heathrow Airport, you can take the Heathrow Express from London Paddington Train Station in approximately 15min. For those departing from Gatwick Airport, there is the Gatwick Express that leaves from London Victoria train station and takes around 30min.
  • If you have a disability and you're flying from London Airports, you can request help upon arrival at the terminal. However, we suggest you call your airline at least 48h before take-off so that they can arrange for suitable assistance.
See more tips

Top 5 airlines serving from London to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from London to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.7
FinnairOverall score based on 1381 reviews
6.9Food
7.6Comfort
8.2Crew
7.8Boarding
7.0Entertainment
Airline reviews

All good- I love BA and the professionalism of the crew and pilots.

8.0 ExcellentAnonymous, Apr 2024JFK - LHR
Read more about Finnair reviews

All good- I love BA and the professionalism of the crew and pilots.

Great flight- smooth, nice crew, nice clean aircraft, departed a little late but arrived 10 early.

It was listed on my ticket as Finnair but there was no indication that the flight was Finnair. In fact the number was even different. There were no employees there until exactly 2 hours before so we had to wait in line at Iberia and hope

Sorting on line would have been appreciated Onward information on flights missed No ability to get seating arranged before we got to gate Very unfriendly at gate

The flight was Finnair but there was no indications anywhere that the checkin was for Finnair also. There was no one to ask. I think at a minimum they should list the code shares so people don’t stand in the wrong line for an hour.

I booked the flight with Finnair, which made the arrangements for downloading a boarding pass unnecessarily complicated. I wouldn't do that again. Instead I'd book direct with AA.

Flight ok, but me and other two passengers didn’t have connection with the entertainment in our seats. So, no movies, no games, no music… for 9 hours. The crew just told us that there’s nothing they can do but I noticed during the flight that there were empty seats, so they could have offered to us to change seats. Customer service could be better.

Finnair cancelled my flight 12 hours prior to leaving for Helsinki. They stated there were mechanical problems. I had to scurry around to find a new flight that would meet my needs for arrival in Helsinki. Luckily I was able to find alternate transportation through Lufthansa/United.

I’m very disappointed, to fly into an airplane for 10 straight hours, and not having a TV even though when I put the ticket I was told that I will have entertainment for the TV. Very disappointed.

Helpful steward. Allowed me to move to some empty seats and I was able to get some sleep. He also had milk for my tea. Americans don’t realise that cream or half and half ruin tea.

My ticket was for Premium Economy and all the seats were taken, I was placed in Economy class and I’m looking for a refund.

Unfortunately delayed 2 hrs due to faulty tyre.. which had to be changed, but better safe than sorry.

The delay was an issue. Other than that. Every thing good

Hi vergin Atlantic service was good but the flight ticket agent travel up charge me extra 57 pounds as a airport charges, actually I refuse to pay but they say if I not pay £57 then they say you will not be able to travel from Heathrow to goa ,so for me there was no option and it was just 3 day before my departure so i paid, so please look in to the matter. And I have a receipt of £ 57 as well .thanks

Staff didn’t check cabin well for landing seemed more interested in chatting to each other. Food was poor and differed from pre order.

We were in the last group to be called to the flight - which was 30 minutes late taking off. While we were lucky enough to have been given bulkhead seats (due to a medical condition I’d told them about beforehand) the seats weren’t particularly comfortable. A crying baby for the whole trip made things worse, so the crew managed very well with coping. The final thing I’d say was that there wasn’t enough food served during the flight.

Very good. Glad we had Premium for the flight out.

We flew Upper Class from London to The Turks and Caicos. Check in was amazing. Our ldriver too us directly to a special entrance to terminal 3. It took 10 minutes to check in and clear customs. Amazing! The VA lounge is large and comfortable. Boarding the flight was easy and without a wait. The crew was excellent. But the seats were awful, strange and uncomfortable. Having a comfortable flat bed seat is the reason we pays 1000s extra. The VA 787 uses a reverse herringbone configuration. Look it up. You have your back to the window and are facing the aisle with no privacy. Turning the seat into a bed requires assistance from the crew so not very spontaneous. . The food was ok. A bit tasteless and meager portions. Had to pay for WiFi. I believe VA has other configuration on their dream airbus flights. Lots of stuff about all this on YouTube where you can see what I have been describing. I can not recommend taking VA on a long flight with these seats.

From the start everything was perfectly fine. First meal was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast. Staff were fantastic friendly nice they came round and check we need anything else to eat or drink

From the start everything was perfectly fine. First meal was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast. Staff for a fantastic friendly nice we came round and check we need anything else to eat or drink

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Only water and pretzels served on six hour flight. Did not see crew rest of flight. No video screens and so no wired audio. Poor sound on plan so did not understand anything said by crew. This is a safety issue. Electrical socket did not retain charging block so could not charge phone. No video screen so could not watch movies. Phone is not a substitute.

It was fine. Flight was on time and arrived at destination with 15 min to spare.

My bag was lost with my medicine and I am very inconvenienced. I don’t know what happened, however I want you to do a better job on getting people’s bag back

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The food that was offered based on class level of your ticket was absolutely ridiculous and disgusting. They didn't even hot tea to serve, the food was horrible. On our departure flight I was seated in premium plus economy and considering the cost of the flight the food was literally some of the worst I've ever eaten. On the return flight I sat in economy with extra leg room and was given a thin little throw "blanket" and a flimsy little pillow. The air condition was on artic and the seating arrangement wasn't really worth the money. The seat didn't recline good enough and the foot rest was laughable. Total waste.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the room where it was being kept.

The flight was delayed due to weather issue…WiFi did not work and even though I wanted to pay for WiFi I couldn’t buy it. Overall very disappointing even though I paid and reserved Business class

Touchscreens do not work. WiFi did not work. Food is possibly the worst on any European airline. Drinks came by only four times on a cross-Atlantic. The plane was two hours late because—it was announced—Lufthansa didn't have enough large aircraft in their fleet to accommodate an on-time flight.

It was freezing in the airplane. Everyone was wearing everything they had with them. The crew acknowledged it was cold, but did nothing about it

The flight attendants were superb and the service was outstanding. Some passengers with small children were very rude and inconsiderate, kids were constantly crying and some were running around the aisle unsupervised.

Terrible. There was a rattling noise the whole flight. The internet didn't work after I paid. Boarding is very disorganized.

Horrible flight attendant in back of economy that screamed at me, have already reported to United. Horrible food - for Gluten free, why would you assume the person is vegetarian? I was served some kind of horrible curry bean paste and multiple cold rolls and soggy vegetables with no seasoning... um no!

The crew member put her luggage and boxes behind my seat so I was able to recline while the passenger in front of me did for 8 hours. My knees were forced against the seat for hours :(. Dude sitting next to me hasn't showered in weeks so I almost threw up.

Sorry my last review for prg to fra was for this flight. My prg to fra flight was fine but my second flight back to Washington DC was with a slow awful crew who wouldn’t come in a timely manner to take trash and take trash before serving coffee tea and was shoving other people’s bottles of water on me when we were not traveling together

I was at the airport on time , I checked in my luggage . The plane was delayed and the gate was change. The flight board did not give information . I did not get chance to fly. I am going to make a claim for it

Lufthansa was amazing. Definitely upgrade your seat if you can swing it - they take very good care of their passengers. Customs in DC is nothing short of a nightmare though. Stood in line waiting to go back through security for 30 minutes, had to RUN through and across two terminals to make my connection and only had 5 minutes to spare. Terrible. Very very poor coordination by the airport staff and CBP.

I was ver pleased with the service all the way through

my original flight was cancelled the previous day, and i was rescheduled onto this flight, which left much earlier in the morning, impacting my previous evening and requiring me to get up much earlier in the morning to get to the airport online. This practice happens way way way too much, and it seems on every airline, though AA is probably the worst.

The crew was very attentive and kept busy serving a variety of treats!

Offered vegetable curry when it was actually tofu which I don’t care for.

The flight was good the crew excellent…but take off delayed three hours!!!

Both mine and my husband's chairs were broken. Also it took 2 hours to get our bags after our flight which was wild.

perhaps eye contact with the cabin crew, instead of abruptness and an impatience to serve.

Not enough trash pickups throughout the flight. Everything else was great.

Overall good, the gluten free food is very hit/miss though and you must tell them you have an allergy days in advance.

All was good. The headphones they supply are of poor quality. The food is good but too much dairy.

Seating space was crowded and I am a very small woman.

Book cheap flights from London to St. Louis

Cheapest flights to St. Louis from London found in 2024

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to St. Louis found on KAYAK in the last 72 hours.
4/6Tue
3 stops
52h 48mLGW-STL
£234
15/9Sun
1 stop
28h 18mLGW-STL
£262
15/5Wed
1 stop
23h 08mLGW-STL
£285
15/9Sun
3 stops
50h 31mLTN-STL
£286
9/9Mon
1 stopFinnair
14h 50mLHR-STL
£600
4/6Tue
1 stopFinnair
16h 49mLHR-STL
£643
13/5Mon
1 stopBritish Airways
12h 36mLHR-STL
£916
27/7Sat
1 stopLufthansa
24h 00mLHR-STL
£1,242
15/9Sun
2 stopsLufthansa
34h 02mLCY-STL
£1,362
13/7Sat
2 stopsVirgin Atlantic
17h 36mLCY-STL
£1,528

Search by stops

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Last minute flights from London to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from London to St. Louis that are departing in the next 10 days.
8/5Wed
multi-stopFinnair
18h 02mLHR-STL
18/5Sat
multi-stopFinnair
16h 19mSTL-LHR
£535
9/5Thu
multi-stopFinnair
15h 09mLHR-STL
18/5Sat
multi-stopFinnair
14h 44mSTL-LHR
£571
8/5Wed
multi-stopFinnair
12h 25mLHR-STL
18/5Sat
multi-stopFinnair
14h 39mSTL-LHR
£763
8/5Wed
multi-stopKLM
18h 32mLCY-STL
18/5Sat
multi-stopKLM
16h 10mSTL-LCY
£1,162
8/5Wed
multi-stop
13h 00mLHR-STL
18/5Sat
multi-stop
15h 20mSTL-LHR
£1,171
8/5Wed
multi-stop
17h 14mLHR-STL
18/5Sat
multi-stop
14h 40mSTL-LHR
£1,172
9/5Thu
multi-stopLufthansa
15h 16mLHR-STL
18/5Sat
multi-stopLufthansa
13h 25mSTL-LHR
£1,198
9/5Thu
multi-stopKLM
19h 40mLCY-STL
18/5Sat
multi-stopKLM
19h 28mSTL-LCY
£1,372
7/5Tue
multi-stopUnited Airlines
16h 59mLHR-STL
11/5Sat
multi-stopUnited Airlines
13h 35mSTL-LHR
£1,524
9/5Thu
multi-stopLufthansa
32h 15mLGW-STL
18/5Sat
multi-stopLufthansa
41h 35mSTL-LGW
£1,575

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Search by price

London - St. Louis Flights

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - London

Cabin classes: